Home / 20,103.40-27,744.30-11,153.68

Finding the Fourth Proportional to 20,103.40, 27,744.30 and 11,153.68

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Solution

The fourth proportional to 20,103.40, 27,744.30 and 11,153.68 is: 15,392.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.40 : 27,744.30 = 11,153.68 : x
  2. Step 2: Convert to fraction form
    20,103.40/27,744.30 = 11,153.68/x
  3. Step 3: Cross multiply
    20,103.40x = 27,744.30 × 11,153.68
  4. Step 4: Simplify right side
    20,103.40x = 309,451,044.02
  5. Step 5: Solve for x
    x = 309,451,044.02/20,103.40
  6. Step 6: Final answer
    x = 15,392.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.